622550898 has 18 divisors (see below), whose sum is σ = 1349089677. Its totient is φ = 207481680.

The previous prime is 622550893. The next prime is 622550899. The reversal of 622550898 is 898055226.

622550898 is a `hidden beast` number, since 6 + 2 + 2 + 550 + 8 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 543216249 + 79334649 = 23307^2 + 8907^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17643.

It is not an unprimeable number, because it can be changed into a prime (622550891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102918 + ... + 108798.

Almost surely, 2^622550898 is an apocalyptic number.

622550898 is an abundant number, since it is smaller than the sum of its proper divisors (726538779).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622550898 is an frugal number, since it uses more digits than its factorization.

622550898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11770 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 622550898 is about 24950.9698809485. The cubic root of 622550898 is about 853.8697366340.

The spelling of 622550898 in words is "six hundred twenty-two million, five hundred fifty thousand, eight hundred ninety-eight".